viperboard-i2c: probe of viperboard-i2c.2.auto failed with error -5
usb 5-1: USB disconnect, device number 81
general protection fault, probably for non-canonical address 0xdffffc00000000b2: 0000 [#1] SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000590-0x0000000000000597]
CPU: 1 PID: 33 Comm: kworker/1:1 Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_del_entry_valid+0x1d/0xf0 lib/list_debug.c:42
Code: 48 8b 34 24 eb b4 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 55 41 54 55 48 89 fd 48 83 c7 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a0 00 00 00 48 89 ea 4c 8b 65 08 48 b8 00 00 00
RSP: 0018:ffffc900001a7308 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888103ef3008 RCX: ffffc9000f77b000
RDX: 00000000000000b2 RSI: ffffffff820c0c10 RDI: 0000000000000590
RBP: 0000000000000588 R08: 0000000000000001 R09: ffffffff8a1f8737
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000588
R13: 0000000000000590 R14: ffff88813a7c85a0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd73303757 CR3: 0000000100c49000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 list_del include/linux/list.h:146 [inline]
 gpiodevice_release+0x49/0x250 drivers/gpio/gpiolib.c:479
 device_release+0x9f/0x240 drivers/base/core.c:2108
 kobject_cleanup lib/kobject.c:705 [inline]
 kobject_release lib/kobject.c:736 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1c8/0x540 lib/kobject.c:753
 put_device+0x1b/0x30 drivers/base/core.c:3341
 release_nodes+0x49b/0x8f0 drivers/base/devres.c:523
 devres_release_all+0x74/0xd0 drivers/base/devres.c:545
 __device_release_driver+0x3d2/0x6f0 drivers/base/dd.c:1160
 device_release_driver_internal drivers/base/dd.c:1187 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1210
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:533
 device_del+0x502/0xd40 drivers/base/core.c:3421
 platform_device_del.part.0+0x1f/0x220 drivers/base/platform.c:783
 platform_device_del include/linux/err.h:41 [inline]
 platform_device_unregister+0x38/0x80 drivers/base/platform.c:821
 mfd_remove_devices_fn drivers/mfd/mfd-core.c:375 [inline]
 mfd_remove_devices_fn+0x166/0x1b0 drivers/mfd/mfd-core.c:357
 device_for_each_child_reverse+0x110/0x180 drivers/base/core.c:3584
 mfd_remove_devices+0x75/0xa0 drivers/mfd/mfd-core.c:391
 vprbrd_disconnect+0x43/0xf0 drivers/mfd/viperboard.c:111
 usb_unbind_interface+0x1d8/0x8d0 drivers/usb/core/driver.c:458
 __device_release_driver+0x3bd/0x6f0 drivers/base/dd.c:1156
 device_release_driver_internal drivers/base/dd.c:1187 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1210
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:533
 device_del+0x502/0xd40 drivers/base/core.c:3421
 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1413
 usb_disconnect.cold+0x27d/0x791 drivers/usb/core/hub.c:2218
 hub_port_connect drivers/usb/core/hub.c:5074 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x1c9c/0x4320 drivers/usb/core/hub.c:5591
 process_one_work+0x98d/0x1580 kernel/workqueue.c:2275
 process_scheduled_works kernel/workqueue.c:2337 [inline]
 worker_thread+0x82b/0x1120 kernel/workqueue.c:2423
 kthread+0x38c/0x460 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace da2b5bbff1284482 ]---
RIP: 0010:__list_del_entry_valid+0x1d/0xf0 lib/list_debug.c:42
Code: 48 8b 34 24 eb b4 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 55 41 54 55 48 89 fd 48 83 c7 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a0 00 00 00 48 89 ea 4c 8b 65 08 48 b8 00 00 00
RSP: 0018:ffffc900001a7308 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888103ef3008 RCX: ffffc9000f77b000
RDX: 00000000000000b2 RSI: ffffffff820c0c10 RDI: 0000000000000590
RBP: 0000000000000588 R08: 0000000000000001 R09: ffffffff8a1f8737
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000588
R13: 0000000000000590 R14: ffff88813a7c85a0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd73303757 CR3: 0000000007825000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400